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Lecture#5

# Lecture#5 - Chapter 6 Momentum Pages 100-101 Lecture#5...

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Chapter 6 Momentum Pages 100-101 Lecture #5: Agenda: 1. Momentum 2. Conservation of Momentum 3. Impulse Goal: Explaining Linear Momentum Content: Word “momentum” is used in the daily life in more or less the same meaning as in physics. A massive object moving fast have has larger momentum compared to the momentum of the same object moving slowly. In physics, momentum is the product of the mass of the object and its velocity. Since the motion is linear, therefore, the momentum is called linear momentum, and is denoted by P . We can express momentum as Since velocity is a vector, therefore, momentum is also a vector quantity. Momentum unit is a product of the units of mass and velocity, i.e., momentum is expressed as Kg.m/sec. Momentum can be large if any or both the mass and velocity are large. However, momentum will be zero, if the object is at rest. System of Objects with no Net External Forces: If you have more than one object, so that the collection of objects comprises a system, the total momentum of the system is a vector sum of the momentums of the individual objects within the system. Example: Say two objects a and b collide and bounce off each other. Say there are no other forces acting on a and b besides the forces they exert on each other. You can think that the system of two objects a and b is isolated. Objects a and b come into contact during time t. The force object

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Lecture#5 - Chapter 6 Momentum Pages 100-101 Lecture#5...

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